Answer:
D. [tex] \frac{3}{20}[/tex]
Step-by-step explanation:
[tex]l = \frac{ \theta}{360 \degree} \times c \\ \\ l = \frac{54 \degree}{360 \degree} \times c \\ \\ l = \frac{3}{20} \times c \\ \\ [/tex]
Thus, the length of the arc RST is [tex] \frac{3}{20}[/tex] times of the circumference of the circle with center C.
